С глаз долой - из сердца вон
Separation does not contribute to friendship or love. See Глаза не видят - сердце не болит (Г), Разлука - враг любви (P)
Cf: Distance ends enchantment (Am.). Far from eye, far from heart (Br.). The heart soon forgets what the eye sees not (Am.). Long absent, soon forgotten (Am., Br.). Out of sight, out of mind (Am., Br.). Salt water and absence wash away love (Br.). Seldom seen, soon forgotten (Am., Br.). What the eye doesn't see the heart doesn't crave for (Br.)
Русско-английский словарь пословиц и поговорок.
Академик.ру.
2013.